mirror of
https://github.com/melonDS-emu/melonDS.git
synced 2025-07-24 14:49:53 -06:00
Refactor the GPU to be object-oriented (#1873)
* Refactor GPU3D to be an object - Who has two thumbs and is the sworn enemy of global state? This guy! * Refactor GPU itself to be an object - Wow, it's used in a lot of places - Also introduce a new `Melon` namespace for a few classes - I expect other classes will be moved into `Melon` over time * Change signature of Renderer3D::SetRenderSettings - Make it noexcept, and its argument const * Remove some stray whitespace
This commit is contained in:
Jesse Talavera-Greenberg
committed by
GitHub
GitHub
parent
88072a02c5
commit
4558be0d8e
@ -72,8 +72,8 @@ void SoftRenderer::SetupRenderThread()
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}
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SoftRenderer::SoftRenderer() noexcept
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: Renderer3D(false)
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SoftRenderer::SoftRenderer(Melon::GPU& gpu) noexcept
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: Renderer3D(false), GPU(gpu)
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{
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Sema_RenderStart = Platform::Semaphore_Create();
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Sema_RenderDone = Platform::Semaphore_Create();
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@ -105,7 +105,7 @@ void SoftRenderer::Reset()
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SetupRenderThread();
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}
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void SoftRenderer::SetRenderSettings(GPU::RenderSettings& settings)
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void SoftRenderer::SetRenderSettings(const Melon::RenderSettings& settings) noexcept
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{
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Threaded = settings.Soft_Threaded;
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SetupRenderThread();
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@ -387,7 +387,7 @@ bool DepthTest_LessThan_FrontFacing(s32 dstz, s32 z, u32 dstattr)
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return false;
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}
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u32 AlphaBlend(u32 srccolor, u32 dstcolor, u32 alpha)
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u32 SoftRenderer::AlphaBlend(u32 srccolor, u32 dstcolor, u32 alpha) noexcept
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{
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u32 dstalpha = dstcolor >> 24;
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@ -398,7 +398,7 @@ u32 AlphaBlend(u32 srccolor, u32 dstcolor, u32 alpha)
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u32 srcG = (srccolor >> 8) & 0x3F;
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u32 srcB = (srccolor >> 16) & 0x3F;
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if (RenderDispCnt & (1<<3))
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if (GPU.GPU3D.RenderDispCnt & (1<<3))
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{
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u32 dstR = dstcolor & 0x3F;
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u32 dstG = (dstcolor >> 8) & 0x3F;
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@ -427,7 +427,7 @@ u32 SoftRenderer::RenderPixel(Polygon* polygon, u8 vr, u8 vg, u8 vb, s16 s, s16
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if (blendmode == 2)
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{
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if (RenderDispCnt & (1<<1))
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if (GPU.GPU3D.RenderDispCnt & (1<<1))
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{
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// highlight mode: color is calculated normally
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// except all vertex color components are set
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@ -441,7 +441,7 @@ u32 SoftRenderer::RenderPixel(Polygon* polygon, u8 vr, u8 vg, u8 vb, s16 s, s16
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{
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// toon mode: vertex color is replaced by toon color
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u16 tooncolor = RenderToonTable[vr >> 1];
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u16 tooncolor = GPU.GPU3D.RenderToonTable[vr >> 1];
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vr = (tooncolor << 1) & 0x3E; if (vr) vr++;
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vg = (tooncolor >> 4) & 0x3E; if (vg) vg++;
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@ -449,7 +449,7 @@ u32 SoftRenderer::RenderPixel(Polygon* polygon, u8 vr, u8 vg, u8 vb, s16 s, s16
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}
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}
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if ((RenderDispCnt & (1<<0)) && (((polygon->TexParam >> 26) & 0x7) != 0))
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if ((GPU.GPU3D.RenderDispCnt & (1<<0)) && (((polygon->TexParam >> 26) & 0x7) != 0))
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{
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u8 tr, tg, tb;
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@ -502,9 +502,9 @@ u32 SoftRenderer::RenderPixel(Polygon* polygon, u8 vr, u8 vg, u8 vb, s16 s, s16
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a = polyalpha;
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}
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if ((blendmode == 2) && (RenderDispCnt & (1<<1)))
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if ((blendmode == 2) && (GPU.GPU3D.RenderDispCnt & (1<<1)))
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{
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u16 tooncolor = RenderToonTable[vr >> 1];
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u16 tooncolor = GPU.GPU3D.RenderToonTable[vr >> 1];
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vr = (tooncolor << 1) & 0x3E; if (vr) vr++;
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vg = (tooncolor >> 4) & 0x3E; if (vg) vg++;
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@ -748,7 +748,7 @@ void SoftRenderer::RenderShadowMaskScanline(RendererPolygon* rp, s32 y)
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std::swap(zl, zr);
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// CHECKME: edge fill rules for swapped opaque shadow mask polygons
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if ((polyalpha < 31) || (RenderDispCnt & (3<<4)))
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if ((polyalpha < 31) || (GPU.GPU3D.RenderDispCnt & (3<<4)))
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{
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l_filledge = true;
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r_filledge = true;
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@ -776,7 +776,7 @@ void SoftRenderer::RenderShadowMaskScanline(RendererPolygon* rp, s32 y)
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rp->SlopeR.EdgeParams<false>(&r_edgelen, &r_edgecov);
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// CHECKME: edge fill rules for unswapped opaque shadow mask polygons
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if ((polyalpha < 31) || (RenderDispCnt & (3<<4)))
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if ((polyalpha < 31) || (GPU.GPU3D.RenderDispCnt & (3<<4)))
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{
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l_filledge = true;
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r_filledge = true;
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@ -797,7 +797,7 @@ void SoftRenderer::RenderShadowMaskScanline(RendererPolygon* rp, s32 y)
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// similarly, we can perform alpha test early (checkme)
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if (wireframe) polyalpha = 31;
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if (polyalpha <= RenderAlphaRef) return;
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if (polyalpha <= GPU.GPU3D.RenderAlphaRef) return;
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// in wireframe mode, there are special rules for equal Z (TODO)
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@ -982,7 +982,7 @@ void SoftRenderer::RenderPolygonScanline(RendererPolygon* rp, s32 y)
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// * the bottom-most pixel of negative x-major slopes are filled if they are next to a flat bottom edge
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// edges are always filled if antialiasing/edgemarking are enabled or if the pixels are translucent
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// checkme: do swapped line polygons exist?
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if ((polyalpha < 31) || wireframe || (RenderDispCnt & ((1<<4)|(1<<5))))
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if ((polyalpha < 31) || wireframe || (GPU.GPU3D.RenderDispCnt & ((1<<4)|(1<<5))))
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{
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l_filledge = true;
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r_filledge = true;
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@ -1016,7 +1016,7 @@ void SoftRenderer::RenderPolygonScanline(RendererPolygon* rp, s32 y)
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// * the bottom-most pixel of negative x-major slopes are filled if they are next to a flat bottom edge
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// * edges are filled if both sides are identical and fully overlapping
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// edges are always filled if antialiasing/edgemarking are enabled or if the pixels are translucent
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if ((polyalpha < 31) || wireframe || (RenderDispCnt & ((1<<4)|(1<<5))))
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if ((polyalpha < 31) || wireframe || (GPU.GPU3D.RenderDispCnt & ((1<<4)|(1<<5))))
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{
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l_filledge = true;
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r_filledge = true;
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@ -1119,13 +1119,13 @@ void SoftRenderer::RenderPolygonScanline(RendererPolygon* rp, s32 y)
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u8 alpha = color >> 24;
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// alpha test
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if (alpha <= RenderAlphaRef) continue;
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if (alpha <= GPU.GPU3D.RenderAlphaRef) continue;
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if (alpha == 31)
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{
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u32 attr = polyattr | edge;
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if (RenderDispCnt & (1<<4))
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if (GPU.GPU3D.RenderDispCnt & (1<<4))
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{
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// anti-aliasing: all edges are rendered
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@ -1215,13 +1215,13 @@ void SoftRenderer::RenderPolygonScanline(RendererPolygon* rp, s32 y)
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u8 alpha = color >> 24;
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// alpha test
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if (alpha <= RenderAlphaRef) continue;
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if (alpha <= GPU.GPU3D.RenderAlphaRef) continue;
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if (alpha == 31)
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{
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u32 attr = polyattr | edge;
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if ((RenderDispCnt & (1<<4)) && (attr & 0xF))
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if ((GPU.GPU3D.RenderDispCnt & (1<<4)) && (attr & 0xF))
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{
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// anti-aliasing: all edges are rendered
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@ -1307,13 +1307,13 @@ void SoftRenderer::RenderPolygonScanline(RendererPolygon* rp, s32 y)
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u8 alpha = color >> 24;
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// alpha test
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if (alpha <= RenderAlphaRef) continue;
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if (alpha <= GPU.GPU3D.RenderAlphaRef) continue;
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if (alpha == 31)
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{
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u32 attr = polyattr | edge;
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if (RenderDispCnt & (1<<4))
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if (GPU.GPU3D.RenderDispCnt & (1<<4))
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{
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// anti-aliasing: all edges are rendered
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@ -1377,7 +1377,7 @@ u32 SoftRenderer::CalculateFogDensity(u32 pixeladdr)
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u32 z = DepthBuffer[pixeladdr];
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u32 densityid, densityfrac;
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if (z < RenderFogOffset)
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if (z < GPU.GPU3D.RenderFogOffset)
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{
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densityid = 0;
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densityfrac = 0;
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@ -1389,8 +1389,8 @@ u32 SoftRenderer::CalculateFogDensity(u32 pixeladdr)
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// on hardware, the final value can overflow the 32-bit range with a shift big enough,
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// causing fog to 'wrap around' and accidentally apply to larger Z ranges
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z -= RenderFogOffset;
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z = (z >> 2) << RenderFogShift;
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z -= GPU.GPU3D.RenderFogOffset;
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z = (z >> 2) << GPU.GPU3D.RenderFogShift;
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densityid = z >> 17;
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if (densityid >= 32)
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@ -1404,8 +1404,8 @@ u32 SoftRenderer::CalculateFogDensity(u32 pixeladdr)
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// checkme (may be too precise?)
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u32 density =
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((RenderFogDensityTable[densityid] * (0x20000-densityfrac)) +
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(RenderFogDensityTable[densityid+1] * densityfrac)) >> 17;
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((GPU.GPU3D.RenderFogDensityTable[densityid] * (0x20000-densityfrac)) +
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(GPU.GPU3D.RenderFogDensityTable[densityid+1] * densityfrac)) >> 17;
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if (density >= 127) density = 128;
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return density;
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@ -1417,7 +1417,7 @@ void SoftRenderer::ScanlineFinalPass(s32 y)
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// clearing all polygon fog flags if the master flag isn't set?
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// merging all final pass loops into one?
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if (RenderDispCnt & (1<<5))
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if (GPU.GPU3D.RenderDispCnt & (1<<5))
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{
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// edge marking
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// only applied to topmost pixels
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@ -1437,7 +1437,7 @@ void SoftRenderer::ScanlineFinalPass(s32 y)
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((polyid != (AttrBuffer[pixeladdr-ScanlineWidth] >> 24)) && (z < DepthBuffer[pixeladdr-ScanlineWidth])) ||
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((polyid != (AttrBuffer[pixeladdr+ScanlineWidth] >> 24)) && (z < DepthBuffer[pixeladdr+ScanlineWidth])))
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{
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u16 edgecolor = RenderEdgeTable[polyid >> 3];
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u16 edgecolor = GPU.GPU3D.RenderEdgeTable[polyid >> 3];
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u32 edgeR = (edgecolor << 1) & 0x3E; if (edgeR) edgeR++;
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u32 edgeG = (edgecolor >> 4) & 0x3E; if (edgeG) edgeG++;
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u32 edgeB = (edgecolor >> 9) & 0x3E; if (edgeB) edgeB++;
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@ -1450,7 +1450,7 @@ void SoftRenderer::ScanlineFinalPass(s32 y)
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}
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}
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if (RenderDispCnt & (1<<7))
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if (GPU.GPU3D.RenderDispCnt & (1<<7))
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{
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// fog
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@ -1463,12 +1463,12 @@ void SoftRenderer::ScanlineFinalPass(s32 y)
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// TODO: check the 'fog alpha glitch with small Z' GBAtek talks about
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bool fogcolor = !(RenderDispCnt & (1<<6));
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bool fogcolor = !(GPU.GPU3D.RenderDispCnt & (1<<6));
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u32 fogR = (RenderFogColor << 1) & 0x3E; if (fogR) fogR++;
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u32 fogG = (RenderFogColor >> 4) & 0x3E; if (fogG) fogG++;
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u32 fogB = (RenderFogColor >> 9) & 0x3E; if (fogB) fogB++;
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u32 fogA = (RenderFogColor >> 16) & 0x1F;
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u32 fogR = (GPU.GPU3D.RenderFogColor << 1) & 0x3E; if (fogR) fogR++;
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u32 fogG = (GPU.GPU3D.RenderFogColor >> 4) & 0x3E; if (fogG) fogG++;
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u32 fogB = (GPU.GPU3D.RenderFogColor >> 9) & 0x3E; if (fogB) fogB++;
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u32 fogA = (GPU.GPU3D.RenderFogColor >> 16) & 0x1F;
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for (int x = 0; x < 256; x++)
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{
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@ -1528,7 +1528,7 @@ void SoftRenderer::ScanlineFinalPass(s32 y)
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}
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}
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if (RenderDispCnt & (1<<4))
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if (GPU.GPU3D.RenderDispCnt & (1<<4))
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{
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// anti-aliasing
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@ -1583,8 +1583,8 @@ void SoftRenderer::ScanlineFinalPass(s32 y)
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void SoftRenderer::ClearBuffers()
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{
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u32 clearz = ((RenderClearAttr2 & 0x7FFF) * 0x200) + 0x1FF;
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u32 polyid = RenderClearAttr1 & 0x3F000000; // this sets the opaque polygonID
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u32 clearz = ((GPU.GPU3D.RenderClearAttr2 & 0x7FFF) * 0x200) + 0x1FF;
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u32 polyid = GPU.GPU3D.RenderClearAttr1 & 0x3F000000; // this sets the opaque polygonID
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// fill screen borders for edge marking
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@ -1614,10 +1614,10 @@ void SoftRenderer::ClearBuffers()
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// clear the screen
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if (RenderDispCnt & (1<<14))
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if (GPU.GPU3D.RenderDispCnt & (1<<14))
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{
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u8 xoff = (RenderClearAttr2 >> 16) & 0xFF;
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u8 yoff = (RenderClearAttr2 >> 24) & 0xFF;
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u8 xoff = (GPU.GPU3D.RenderClearAttr2 >> 16) & 0xFF;
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u8 yoff = (GPU.GPU3D.RenderClearAttr2 >> 24) & 0xFF;
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for (int y = 0; y < ScanlineWidth*192; y+=ScanlineWidth)
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{
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@ -1649,13 +1649,13 @@ void SoftRenderer::ClearBuffers()
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else
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{
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// TODO: confirm color conversion
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u32 r = (RenderClearAttr1 << 1) & 0x3E; if (r) r++;
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u32 g = (RenderClearAttr1 >> 4) & 0x3E; if (g) g++;
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u32 b = (RenderClearAttr1 >> 9) & 0x3E; if (b) b++;
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u32 a = (RenderClearAttr1 >> 16) & 0x1F;
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u32 r = (GPU.GPU3D.RenderClearAttr1 << 1) & 0x3E; if (r) r++;
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u32 g = (GPU.GPU3D.RenderClearAttr1 >> 4) & 0x3E; if (g) g++;
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u32 b = (GPU.GPU3D.RenderClearAttr1 >> 9) & 0x3E; if (b) b++;
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u32 a = (GPU.GPU3D.RenderClearAttr1 >> 16) & 0x1F;
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u32 color = r | (g << 8) | (b << 16) | (a << 24);
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polyid |= (RenderClearAttr1 & 0x8000);
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polyid |= (GPU.GPU3D.RenderClearAttr1 & 0x8000);
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for (int y = 0; y < ScanlineWidth*192; y+=ScanlineWidth)
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{
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@ -1698,19 +1698,19 @@ void SoftRenderer::RenderPolygons(bool threaded, Polygon** polygons, int npolys)
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void SoftRenderer::VCount144()
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{
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if (RenderThreadRunning.load(std::memory_order_relaxed) && !GPU3D::AbortFrame)
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if (RenderThreadRunning.load(std::memory_order_relaxed) && !GPU.GPU3D.AbortFrame)
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Platform::Semaphore_Wait(Sema_RenderDone);
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}
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void SoftRenderer::RenderFrame()
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{
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auto textureDirty = GPU::VRAMDirty_Texture.DeriveState(GPU::VRAMMap_Texture);
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auto texPalDirty = GPU::VRAMDirty_TexPal.DeriveState(GPU::VRAMMap_TexPal);
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auto textureDirty = GPU.VRAMDirty_Texture.DeriveState(GPU.VRAMMap_Texture, GPU);
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auto texPalDirty = GPU.VRAMDirty_TexPal.DeriveState(GPU.VRAMMap_TexPal, GPU);
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bool textureChanged = GPU::MakeVRAMFlat_TextureCoherent(textureDirty);
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bool texPalChanged = GPU::MakeVRAMFlat_TexPalCoherent(texPalDirty);
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bool textureChanged = GPU.MakeVRAMFlat_TextureCoherent(textureDirty);
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bool texPalChanged = GPU.MakeVRAMFlat_TexPalCoherent(texPalDirty);
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FrameIdentical = !(textureChanged || texPalChanged) && RenderFrameIdentical;
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FrameIdentical = !(textureChanged || texPalChanged) && GPU.GPU3D.RenderFrameIdentical;
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if (RenderThreadRunning.load(std::memory_order_relaxed))
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{
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@ -1719,7 +1719,7 @@ void SoftRenderer::RenderFrame()
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else if (!FrameIdentical)
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{
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ClearBuffers();
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RenderPolygons(false, &RenderPolygonRAM[0], RenderNumPolygons);
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RenderPolygons(false, &GPU.GPU3D.RenderPolygonRAM[0], GPU.GPU3D.RenderNumPolygons);
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}
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}
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@ -1743,7 +1743,7 @@ void SoftRenderer::RenderThreadFunc()
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else
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{
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ClearBuffers();
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RenderPolygons(true, &RenderPolygonRAM[0], RenderNumPolygons);
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RenderPolygons(true, &GPU.GPU3D.RenderPolygonRAM[0], GPU.GPU3D.RenderNumPolygons);
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}
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Platform::Semaphore_Post(Sema_RenderDone);
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